CN106834772A - A kind of aluminium silicon tantalum intermediate alloy and preparation method thereof - Google Patents
A kind of aluminium silicon tantalum intermediate alloy and preparation method thereof Download PDFInfo
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- CN106834772A CN106834772A CN201710120405.2A CN201710120405A CN106834772A CN 106834772 A CN106834772 A CN 106834772A CN 201710120405 A CN201710120405 A CN 201710120405A CN 106834772 A CN106834772 A CN 106834772A
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- aluminium
- tantalum
- silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0078—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only silicides
Abstract
A kind of aluminium silicon tantalum intermediate alloy and preparation method thereof.The present invention is aluminium silicon tantalum intermediate alloy, and comprising aluminium, silicon, three kinds of essential elements of tantalum, the mass percent of each component is respectively：Aluminium 60.00% 95.00%, silicon 1.00% 30.00%, tantalum 0.50% 10.00%.The preparation process is simple of the intermediate alloy, low cost, suitable industrialized production, prepared aluminium silicon tantalum alloy intermediate alloy mutually has to silicon in transcocrystallized Al-Si alloy and breeds metamorphism.
Description
Technical field
The invention belongs to metal material field, more particularly to a kind of aluminium-silicon-tantalum intermediate alloy and preparation method thereof.
Background technology
Aluminium alloy is because of lightweight, aboundresources, good combination property, so in machinery, communications and transportation, space flight and war industry
Increase year by year Deng the application in high-technology field.High-quality aluminium alloy is produced, control ingot structure is highly important.Especially
It is the tissue and performance requirement of transcocrystallized Al-Si alloy raising it is also more and more urgent.Improve transcocrystallized Al-Si alloy
Can be, it is necessary to carry out fine degenerate treatment to aluminium alloy melt, the Metamorphism treatment mutually appropriate to silicon can improve the tissue of aluminium alloy
And its mechanical property is greatly improved.At present, at home and abroad mainly silicon is carried out by adding the method for alterant in industrial production
The Metamorphism treatment of phase, widely used at present is that Sr goes bad, i.e. Sr is rotten generally to be added in the form of Al-10Sr intermediate alloys
Enter, its fusion range is between 654-770 DEG C, it is easy to absorbed by aluminium liquid, the rate of recovery is easily controlled up to 70%-80%, addition
System, the intermediate alloy can make Eutectic Silicon in Al-Si Cast Alloys be converted into threadiness by sheet in being added to aluminum melt, and incubation period of going bad is 30-
40min, it is rotten to be valid up to 5-7h, can remelting repeatedly；Pernicious gas is not produced in Sr metamorphic processes simultaneously, is not corroded and is set
It is standby.But making aluminium alloy melt during alterant with Sr should not carry out refining treatment using chlorine or villaumite, and the easy scaling loss of Sr reduces Sr
Modification effect, preferably with logical argon gas, nitrogen or vacuum degassed method refining.Sr modified alloy melts air-breathing tendency increases
Plus, the pinhole rate of casting is significantly improved, low-alloyed density drops, and the defect such as stomata and oxide inclusion is serious, by melt treatment
Still there is Al afterwards2SrO3It is mingled with, modification effect reduction.In addition, the price of Sr is of a relatively high, modification effect is to casting cooling velocity
It is very sensitive.So this also limits the application field of the intermediate alloy.Therefore, by substantial amounts of experiment, having invented a kind of new
The intermediate alloy of type, mutually going bad to breed as transcocrystallized Al-Si alloy tissue silicon uses.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided one kind can effectively breed rotten hypereutectic al-si and close
Aluminium-silicon-tantalum the intermediate alloy of silicon phase morphology in gold, while providing a kind of process is simple, low cost, being adapted to industrial preparation
Technique and method.
The present invention is achieved in the following ways：
A kind of aluminium-silicon-niobium intermediate alloy, comprising aluminium, silicon, three kinds of essential elements of tantalum, the mass percent of each component is respectively：Aluminium
60.00%-95.00%, silicon 1.00%-30.00%, tantalum 0.50%-10.00%；Aluminium ingot purity >=99.9%, disperse in the intermediate alloy
It is dispersed with micron-sized TaSi2Particle, and quantity is more, tantalum element can be added with aluminium-tantalum intermediate alloy or simple metal tantalum.
The preparation method of above-mentioned aluminium-silicon-tantalum intermediate alloy, its feature is comprised the steps of：
The preparation method of aluminium-silicon-tantalum intermediate alloy is：Fine aluminium is placed in resistance furnace first melts and be warming up to 800-1200
DEG C, the metal tantalum or aluminium of certain mass-tantalum intermediate alloy, HIGH-PURITY SILICON are sequentially added in the aluminum melt of fusing, then use graphite
Rod is placed in resistance furnace after being sufficiently stirred for and is incubated, and is stirred once with graphite rod every 10min-15min；Melt insulation to be mixed reaches
To the scheduled time, blend melt is stood into 5min, press-in carbon trichloride is refined and skimmed, finally by blend melt casting ingot-forming or
Continuous casting is made wire rod.
Carbon trichloride described above dries moisture in drying baker；The mould that will be used and used tool brushing of skimming
One coating, prevents the pollution of Impurity Fe.Melting is carried out from graphite crucible in whole preparation process, from graphite rod
Stirring, it is therefore an objective to prevent the pollution of other impurities element.
Specific embodiment
Two most preferred embodiments of the invention are given below.
Embodiment 1
As described above preparation technology and method prepare Al-5Si-Ta intermediate alloys process it is as follows：
（1）Raw material prepares：Aluminium ingot, HIGH-PURITY SILICON, metal tantalum, carbon trichloride etc., wherein aluminium ingot purity >=99.9%.
（2）The intermediate alloy of 1kg is prepared, the raw material needed for being weighed than Si/Ta=5/1 according to mass fraction, the burn out rate of aluminium
It is 2-3%.
（3）Carbon trichloride is placed in drying baker, 1h is heated at 100 DEG C, to remove moisture.
（4）By required mould, the coating of Slag Tool brushing one, the pollution of the impurity elements such as Fe is prevented, prepared
Melting is carried out using graphite crucible in journey, is stirred from graphite rod, prevent the pollution of other impurities element.
（5）Aluminium ingot is melted using well formula resistance furnace and is heated to 850 DEG C, after aluminium ingot is completely melt, will first weighed
Metal tantalum wrapped with aluminium-foil paper, and be put into aluminum melt constantly with graphite rod stir after stand 5min；It is subsequently adding and has claimed
The HIGH-PURITY SILICON of amount, is placed in resistance furnace after being stirred with graphite rod and is incubated, and temperature is set as 800 DEG C, every 15min stirrings once,
To ensure that reaction is carried out completely；Blend melt is incubated 1h in resistance furnace, and the carbon trichloride that addition accounts for gross mass 2-3%wt is carried out
Refining degassing processing, pulls out slag, finally by melt cast ingot after standing 5min with Slag Tool.
Embodiment 2
As described above preparation technology and method prepare Al-10Si-2Ta intermediate alloys process it is as follows：
（1）Raw material prepares：Aluminium ingot, HIGH-PURITY SILICON, metal tantalum, carbon trichloride etc., wherein aluminium ingot purity >=99.9%.
（2）The intermediate alloy of 1kg is prepared, the raw material needed for being weighed than Si/Ta=10/2 according to mass fraction, the scaling loss of aluminium
Rate is 2-3%.
（3）Carbon trichloride is placed in drying baker, 1h is heated at 100 DEG C, to remove moisture.
（4）By required mould, the coating of Slag Tool brushing one, the pollution of the impurity elements such as Fe is prevented, prepared
Melting is carried out using graphite crucible in journey, is stirred from graphite rod, prevent the pollution of other impurities element.
（5）Aluminium ingot is melted using well formula resistance furnace, after aluminium ingot is completely melt and add be warming up to 950 DEG C, will first claim
Weight metal tantalum wrapped with aluminium-foil paper, and be put into aluminum melt constantly with graphite rod stir after stand 5min；It is subsequently adding
The HIGH-PURITY SILICON weighed, is placed in resistance furnace after being stirred with graphite rod and is incubated, and temperature is set as 850 DEG C, and one is stirred every 15min
It is secondary, to ensure that reaction is carried out completely；Blend melt is incubated 30min in resistance furnace, and addition accounts for the hexachloroethanc of gross mass 2-3%wt
Alkane carries out refining degassing processing, slag is pulled out with Slag Tool after standing 5min, finally by melt cast ingot.
Claims (1)
1. a kind of preparation method of aluminium-silicon-tantalum alloy, aluminium-silicon-tantalum alloy includes aluminium, silicon, three kinds of essential elements of tantalum, each component
Mass percent be respectively：Aluminium 60.00%-95.00%, silicon 1.00%-30.00%, tantalum 0.50%-10.00%；It is characterized in that preparing
Method, comprises the following steps：
（1）Required raw material is got out according to following mass percent：Silicon 1.00%-30.00%, tantalum 0.50%-10.00%, it is balance of
Fine aluminium；Tantalum element can be that to be added with aluminium-tantalum intermediate alloy form can also be that simple metal tantalum is added；
（2）Fine aluminium is placed in resistance furnace and melts and be warming up to 800-1200 DEG C, be separately added into metallic silicon, metal tantalum or aluminium-tantalum
Intermediate alloy, stirs once at regular intervals, is placed in reaching certain hour in 800-900 DEG C of insulation, insulation in resistance furnace
Casting ingot-forming or it is made wire rod afterwards.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710120405.2A CN106834772B (en) | 2017-03-02 | 2017-03-02 | A kind of aluminium-silicon-tantalum intermediate alloy and preparation method thereof |
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| CN201710120405.2A CN106834772B (en) | 2017-03-02 | 2017-03-02 | A kind of aluminium-silicon-tantalum intermediate alloy and preparation method thereof |
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| CN106834772A true CN106834772A (en) | 2017-06-13 |
| CN106834772B CN106834772B (en) | 2018-07-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468479A (en) * | 2018-12-21 | 2019-03-15 | 济南大学 | A kind of aluminium-tantalum-carbon intermediate alloy and its preparation method and application |
| CN113817928A (en) * | 2021-09-09 | 2021-12-21 | 合肥工业大学 | Low-temperature casting preparation method and application of Al-Ta intermediate alloy |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04218637A (en) * | 1990-12-18 | 1992-08-10 | Honda Motor Co Ltd | Manufacture of high strength and high toughness aluminum alloy |
| CN103469022A (en) * | 2013-08-16 | 2013-12-25 | 南昌大学 | Aluminum-silicon-samarium casting aluminum alloy and preparation method thereof |
-
2017
- 2017-03-02 CN CN201710120405.2A patent/CN106834772B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04218637A (en) * | 1990-12-18 | 1992-08-10 | Honda Motor Co Ltd | Manufacture of high strength and high toughness aluminum alloy |
| CN103469022A (en) * | 2013-08-16 | 2013-12-25 | 南昌大学 | Aluminum-silicon-samarium casting aluminum alloy and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468479A (en) * | 2018-12-21 | 2019-03-15 | 济南大学 | A kind of aluminium-tantalum-carbon intermediate alloy and its preparation method and application |
| CN113817928A (en) * | 2021-09-09 | 2021-12-21 | 合肥工业大学 | Low-temperature casting preparation method and application of Al-Ta intermediate alloy |
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| Publication number | Publication date |
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| CN106834772B (en) | 2018-07-10 |
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